Vapor-burner.



No. 667,974. Patented Feb. I2, I901. Jv A. DENSMORE.

VAPOR BURNER.

'Apphcatmn filed May 31 1900 (No Model.)

5 Firms co. moraumn. WASHINGTON. a. c.

UTTTThn STaTns TENT Trice.

JAMES A. DENSMORE, OF ST. LOUIS, MISSOURI.

VAPOH BURNER.

SPEGIFIGATIGN forming part of Letters Fatent No. 667,974, dated February12, 1901. Application filed May 31, 1900. derial1\l0.l8,586. (No model.)

To (all whom, it may concern:

Be it known that 1, JAMES A. DENsMoRE, a citizen of the United States,residing at St. Louis, State of Missouri, have invented certain new anduseful Improvements in Vapor- Burners, of which the followingisafull,clear, and exact description, reference being had to the accompanyingdrawings, forming a part hereof.

My invention has relation to improvements in vapor-burners; and itconsists in the novel arrangement and combination of parts more fullyset forth in the specification and pointed out in the claims.

In the drawings, Figure 1 is a top plan view of the device. Fig. 2 is amiddle vertical longitudinal section on line 2 2 of Fig. 1. Fig. 3 is afront elevation of the device; and Fig. 4 is a diagrammatic perspectiveview of a section of the stove, showing the manner in which my burner isapplied.

The object of my invention is to construct a vapor-burner which may bereadily taken apart and cleaned, one in which a maximum degree oftemperature will be developed, one which will insure perfect combustionfor the carbon contained in the vapor fed to the flame, one in which thehighest percentage of the heat units developed thereby can be utilizedto the best advantage, one in which the feedvalve will not becomeoverheated, and one possessing further and other advantages betterapparent from a detailed description of the device, which is as follows:

Referring to the drawings, 1 represents a preferably cylindricalreceptacle closed at the bottom, having a smooth interior surface andadapted to receive a plug 2, provided with outer peripheral spiralgrooves 3 and threads 3, the plug fitting snugly within the receptacle,so that when once inserted the threads 3 and the inner surface of thereceptacle form a spiral worm or passage for conveying the vapor to theburners, as presently to be seen. This spiral passage serves as avaporizing-coil, the latter under the circumstances being composed oftwo sections-viz., the receptacle 1 and the plug 2-which can at anymoment be taken apart and cleaned should the spiral passage for anyreason hecome clogged or choked. The receptacle 1 is closed by acover-plate 4, provided at the corners with recesses 5, adapted toreceive bolts 6, passed through corresponding alining recesses of theupper terminal flange 7, carried by the receptacle, the parts beingsubse quently united by nuts 8, carried by the bolts. The receptacle 1is surrounded by a hood 9 open at the bottom,the receptacle beinginserted through an opening formed in the roof or top of the hood. Thereceptacle is provided with peripheral lugs 10, adapted in the act ofinserting to pass through corresponding recesses 11, formed in the topof the hood, and when the lugs have once passed below the recesses thereceptacle is given a slight turn, so as to bring the lugs and recessesout of alinement, when the parts will become locked. The cover-plate 4is provided with hollow arms 12, extending, when once the receptacle 1is in place, parallel to the longitudinal axis of the hood, the armsbeing closed at their outer ends and being provided with dependingnozzles or burner-tips 13, which are superposed directly over theenlarged openings 14, formed in the top of the hood, the flame issuingfrom the burner-tips 13 shooting downward and burning within thehood,which thus constitutes the combustion-chamber.

The base of the receptacle 1 rests upon an annular hub 15, formed at thebottom of an outer shield 16, which is open at the top and surrounds thefront and ends of the hood, the shield being cut away in the rear. Thefeedpipe 17 passes through the end wall of the shield, under the lowerscalloped edge of the hood, and taps the receptacle 1, near the bottomthereof, the vapor or fluid being delivered through the vaporizing-coilto the burner-tips, as is obvious. To effect an even distribution of thefluid to the two arms 12, the plug 2 is so inserted as to bring theupper terminal of the screw-thread out therein at a point approximatelymidway between the inner ends of said arms. The flow of vapor will thenbetter distribute itself.

The bottom of the receptacle 1 is provided with a boss 18, adapted to bereceived by the socket 15, the boss being adapted to be inserted into asocket of a suitable base-plate (not shown) set upon the grate of anopen fireplace, in which event the outer shield is first removed. Theshield is employed in cases where the device is inserted into thefireplace of an ordinary stove, the shield resting upon the gratethereof, the feed-pipe being properly connected in any mechanicalmanner. (See Fig. 4.) 1

The needle-valve 19, by which the hydrocarbon is fed to theburner-tips,has interposed between it and the feed-pipe 17 the elbowconnections 20, which bring the casing of the valve substantially evenwith the upper edge of the shield and above the pipe 17, the oil thusdripping from the valve to a point below its casing and preventingoverheating of the latter. The bottom of the valve-casing is coupled toany supply-pipe 21, leading to any suitable source of supply. (Notshown.)

The front wall of the shield 16 is provided with a damper-plate 22,which controls the admission of air from the outside of the shield tothe space between the shield and hood, the damper-openings 22 beinglocated in such manner that the air currents impinging against thebottom of the shield are caused to pass through said openings, beingsubsequently deflected downward below the lower edge of the hood andthen upward into the combustion-chamber. Thus a positive and maximumquantity of oxygen is fed to the downwardly-directed flame issuing fromthe burner-tips 13, insuring complete combustion of the carbon anddeveloping a maximum amount of heat.

It is of course apparent that minor changes may be made in theconstruction without departing from the spirit of myinvention. Thus theinner surface of the receptacle 1 may have a screw-thread cut thereinand the plug 2 may be one having a smooth exterior. So, also,

' the plug may be hollow instead of solid. The

form of the hood and shield may also be altered, as well as otherchanges resorted to,

-which are obvious to the skilled mechanic.

Having fully described my invention, what I claim is-- 1. In avapor-burner, a suitable receptacle, a plug having a screw-thread andspiral groove formed about its peripheral surface whereby a spiralvaporizer is formed upon the assembling of the parts, hollow armsleading from the cover of the receptacle, downwardly-projectingburner-tips at the ends of the arms, a hood forming a combustion-chamberenveloping the receptacle, the hood having an opening beneath each tipfor the free passage of the flame into the combustionchamber, and a pipeconducting the fluid to the receptacle, substantially set forth.

2. In a vapor-burner, a suitable vaporizer, hollow arms leadingtherefrom,burner-tips at the ends of said arms, a hood open at thebottom surrounding the vaporizer, the top of the hood being providedwith openings beneath the burner-tips, and a shield closed at the bottombut open at the top surrounding the hood, the front wall of the shieldbeing provided with openings for admitting air to the space between theshield and hood, substantially as set forth.

3. In a vaporburner, a suitable spiral vaporizer, hollow arms leadingtherefrom, burner-tips at the ends of said arms, a hood open at thebottom surrounding the vaporizer, the top of the hood being providedwith openings beneath the burner-tips, and a shield closed at the bottombut open at the top surrounding the hood, the front wall of the shieldbeing provided with openings for admitting air to the space between theshield and hood, substantially as set forth.

4. A vapor-burner comprising a central receptacle, a plug, having aspiral thread and groove formed along its peripheral surface, adaptedto'be inserted into said receptacle, a cover-plate, having hollow armsextending in diametrically opposite directions, adapted to be coupled tothe receptacle, depending burner-tips formed at the outer ends of thearms, a hood open at the bottom surrounding the receptacle, and havingopenings formed in its top opposite the burner-tips, a shield open atthe top and closed at the bottom surrounding the hood, the base of thereceptacle being carried. by the shield, and the lower edge of the hoodbeing raised a suitable distance above the floor of the shield, afeed-pipe passing through the wall of the shield and tapping the base ofthe receptacle, a feedvalve carried by the feed-pipe at a pointsubstantially opposite the upper edge of the shield,and a series ofdamper-controlled openings formed in the front wall of the shieldadjacent to the upper edge of the same, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

JAMES A. DENSMORE.

Witnesses:

EMIL STAREK, G. L. BELFRY.

